Package org.apache.druid.server.coordinator

Class MetadataManager

java.lang.Object

org.apache.druid.server.coordinator.MetadataManager

public class MetadataManager
extends Object

Contains all metadata managers used by the Coordinator.

Constructor Summary

Constructors

Constructor	Description
MetadataManager(AuditManager auditManager, CoordinatorConfigManager configManager, SegmentsMetadataManager segmentsMetadataManager, MetadataSupervisorManager metadataSupervisorManager, MetadataRuleManager metadataRuleManager, IndexerMetadataStorageCoordinator storageCoordinator, SegmentSchemaManager segmentSchemaManager, SegmentMetadataCache segmentMetadataCache)

Method Summary

Modifier and Type	Method	Description
AuditManager	audit()
CoordinatorConfigManager	configs()
IndexerMetadataStorageCoordinator	indexer()
boolean	isStarted()
Iterable<DataSegment>	iterateAllUsedSegments()	Returns an iterable to go over all segments in all data sources.
void	onLeaderStart()
void	onLeaderStop()
MetadataRuleManager	rules()
SegmentSchemaManager	schemas()
SegmentsMetadataManager	segments()
void	startCache()
void	stopCache()
MetadataSupervisorManager	supervisors()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MetadataManager

@Inject
public MetadataManager(AuditManager auditManager,
 CoordinatorConfigManager configManager,
 SegmentsMetadataManager segmentsMetadataManager,
 MetadataSupervisorManager metadataSupervisorManager,
 MetadataRuleManager metadataRuleManager,
 IndexerMetadataStorageCoordinator storageCoordinator,
 SegmentSchemaManager segmentSchemaManager,
 SegmentMetadataCache segmentMetadataCache)

Method Details

onLeaderStart

public void onLeaderStart()

onLeaderStop

public void onLeaderStop()

startCache

public void startCache()

stopCache

public void stopCache()

isStarted

public boolean isStarted()

audit

public AuditManager audit()

configs

public CoordinatorConfigManager configs()

supervisors

public MetadataSupervisorManager supervisors()

rules

public MetadataRuleManager rules()

segments

public SegmentsMetadataManager segments()

indexer

public IndexerMetadataStorageCoordinator indexer()

schemas

public SegmentSchemaManager schemas()

iterateAllUsedSegments

public Iterable<DataSegment> iterateAllUsedSegments()

Returns an iterable to go over all segments in all data sources. The order in which segments are iterated is unspecified. Note: the iteration may not be as trivially cheap as, for example, iteration over an ArrayList. Try (to some reasonable extent) to organize the code so that it iterates the returned iterable only once rather than several times.